The Collaborative International Dictionary of English v.0.48:

Luna \Lu"na\, n. [L.; akin to lucere to shine. See Light, n.,
   and cf. Lune.]
   1. The moon.
      [1913 Webster]

   2. (Alchemy) Silver.
      [1913 Webster]

   Luna cornea (Old Chem.), horn silver, or fused silver
      chloride, a tough, brown, translucent mass; -- so called
      from its resemblance to horn.

   Luna moth (Zool.), a very large and beautiful American moth
      (Actias luna). Its wings are delicate light green, with
      a stripe of purple along the front edge of the anterior
      wings, the other margins being edged with pale yellow.
      Each wing has a lunate spot surrounded by rings of light
      yellow, blue, and black. The caterpillar commonly feeds on
      the hickory, sassafras, and maple.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Luna
    n 1: (Roman mythology) the goddess of the Moon; counterpart of
         Greek Selene

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

LUNA
       Leuchtendatei fuer UnfallfluchtNAchforschungen (INPOL)


U.S. Gazetteer Counties (2000):

Luna -- U.S. County in New Mexico
   Population (2000):    25016
   Housing Units (2000): 11291
   Land area (2000):     2965.088856 sq. miles (7679.544556 sq. km)
   Water area (2000):    0.188562 sq. miles (0.488373 sq. km)
   Total area (2000):    2965.277418 sq. miles (7680.032929 sq. km)
   Located within:       New Mexico (NM), FIPS 35
   Location:             32.176393 N, 107.712209 W
   Headwords:
    Luna
    Luna, NM
    Luna County
    Luna County, NM